/****************************************************************************
 * arch/arm/src/imxrt/imxrt_wdog.c
 *
 *   Copyright (C) 2018 Gregory Nutt. All rights reserved.
 *   Author:  Janne Rosberg <janne@offcode.fi>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name NuttX nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <stdint.h>
#include <fixedmath.h>
#include <assert.h>

#include "up_arch.h"

#include "hardware/imxrt_wdog.h"
#include "imxrt_config.h"
#include <arch/board/board.h> /* Include last:  has dependencies */

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/
/* Configuration ************************************************************/

/****************************************************************************
 * Private Data
 ****************************************************************************/

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name: imxrt_wdog_disable
 *
 * Description:
 *   Disables all watchdogs
 *
 ****************************************************************************/

void imxrt_wdog_disable_all(void)
{
  uint32_t reg;
  irqstate_t flags;

  reg = getreg16(IMXRT_WDOG1_WCR);
  if (reg & WDOG_WCR_WDE)
    {
      reg &= ~WDOG_WCR_WDE;
      putreg16(reg, IMXRT_WDOG1_WCR);
    }

  reg = getreg16(IMXRT_WDOG2_WCR);
  if (reg & WDOG_WCR_WDE)
  {
    reg &= ~WDOG_WCR_WDE;
    putreg16(reg, IMXRT_WDOG2_WCR);
  }

  flags = enter_critical_section();
  putreg32(RTWDOG_UPDATE_KEY, IMXRT_RTWDOG_CNT);
  putreg32(0xFFFF, IMXRT_RTWDOG_TOVAL);
  modifyreg32(IMXRT_RTWDOG_CS, RTWDOG_CS_EN, RTWDOG_CS_UPDATE);
  leave_critical_section(flags);

}
